摘要
固件程序的设计,是开发USB设备中非常重要的一个环节,它直接影响到USB设备的数据传输速度。本文以Cypress公司的USB控制器芯片AN2131QC为例,重点讨论了EZ-USB的特性,给出了利用EZ-USB框架编写固件程序的步骤、两种固件装载方法,以及相应的程序代码。
It is important for developing USB device to design firmware, which has a direct influence on data transferring speed of USB device. In this paper,according to EZ - USB AN2131QC chip of Cypress Corp, EZ - USB characteristic is discussed emphatically, and the step of writing firmware using EZ -USB frameworks, two firmware downloading methods, and corresponding program codes are offered.
出处
《微处理机》
2005年第6期12-14,共3页
Microprocessors
